Find the density

Q: The following figure is an example of band theory. How many down arrows, electrons, should be in the…

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Q: In melting point, the value for sodium fluoride is higher than that for sodium chloride while that…

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Q: The reactant concentration in a zero-order reaction was 9.00×10−2 MM after 115 ss and 3.50×10−2 MM…

A: In case of a zero order reaction, the rate of the reaction does not depend upon the concentration of…

Q: draw the mechanism for all 3 steps Propose a plausible mechanism for the following transformation.…

A: Acid chloride reacts with ammonia to form an amide. The reaction completes in three steps.

Q: 2. Hydrogen, H2, is thought to be the fuel of the 21t century (by some): H2 (g) + O2 (g) -> H20 (g)…

A: Heat of combustion of any substance can be determine by the use of standard heat of formation of…

Q: Calculate

A: The answer of the given question is given below in the pic .

Q: Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How…

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Q: Ethanol (C2H5OH) can be used as a fuel. How many moles of oxygen are needed to completely react with…

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Q: Each of the molecules shown below generates two different HNMR signals. Match each  molecule with…

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Q: Calculate the maximum work that could be obtained at 25°C and 1 atm from the oxidation of 3.36 mol…

A: Maximum work obtained from a system is equal to the free energy change of that system.

Q: Use standard reduction potentials to calculate the standard free energy change in kJ for the…

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Q: Br HBr OH

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Q: When the ionic compound CuI2  is dissolved in water, which species will react with water to a…

A: Concept: when an ionic compound is dissolved in water then it form corresponding ion in the…

Q: 1000oC

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Q: A set of three nucleophilic displacement reactions is shown below: CH3 CH3 CH3 CH3 CH3…

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Q: 10. H3C N. ICH3 CH3

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Q: The free energy change for the following reaction at 25 °C, when [Ag*] = 1.12 M and [Ni2+] =…

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Q: Given that K, is 7.5x10-3 (aq) for R-NH3* (aq) + H20(1) R-NH2(aq) + H3O* (where R - is a carbon…

A: Given :: Ka = 7.5×10-3 pkb = ?

Q: QUESTION 12 Calculate the standard enthalpy change AH° for the reaction below in kJ given the…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: A) When 12.0 mL of a 5.67x10^-4 M sodium sulfate solution is combined with 15.0 mL of a 3.57x10^-4 M…

A: In order to check whether the precipitate is formed or not, we needed to compare the value of K…

Q: 6) Use a curved arrow mechanism to explain the epimerization of the hydroxyl stereocenter in the…

A: Sodium hydride abstracts proton form the alcohol which is accompanied by ring opening to produce…

Q: What temperature (in °C) did an ideal gas shift to if it was initially at -19.50 °C at 4.620 atm and…

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Q: From the change in internal energy, AE, given for 40 °C, calculate the change in enthalpy, AH, at…

A: Given reaction: N2O2(g) → N2(g) + O2(g) Given ∆E = -151.3 kJ at 40 ∘C We have to calculate the value…

Q: Calculate AG for the reaction given below if the partial pressure of NO2 is 0.273 atm and the…

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Q: What is the relationship between the number of electrons in the valence shell of each of the…

A: Number of valence electrons are electron which are present in valence shell.

Q: Consider the following reaction that follows a second order rate law. 2 NO2 (g)→ 2 NO (g) + O2 (g)…

A: Given, 2NO2(g) ➝ 2 NO(g) + O2(g) The reaction follows a second order rate law. Initial concentration…

Q: ČH-OH HO-C-H H-C-OH H-C-OH O C-H CH,O- -0- H-C-OH O ČH;O- -0-

A: Lyases: These are the enzymes that catalyzes breaking of a covalent bond without hydrolisis.

Q: A Moving to another question will save this response. Question 1 When a sample of an ideal gas is…

A: Initial volume=35.0L  Final volume=11.0L  Pressure=2.35atm  Temperature=25°C

Q: Tritium is radioactive and decays by a first order process with a half-life of 12.5 yr. If an…

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Q: What mass of water will give up 240 calories when the temperature drops from 100 deg C to 68 deg C.…

A: Given:: Heat q= -240 cal T1=100 ℃  T2=68℃  Specific heat capacity of water, Cp= 1 cal g-1℃-1 mass of…

Q: 7) Rough Lewis Structure -Include formal charges other than 0 Electron-Group Geometry/ Molecular…

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Q: Which of the following will decrease the activation energy, Ea, of a reaction? O Increasing the…

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Q: Check H Explanation H HO H. |L| | OHH H H HO || H HƆ CH 0=HƆ H

A: -CHO => aldehyde group -OH => alcohol group -COOH => Carboxylic acid group

Q: Which of the following wavelengths has the lowest energy?

A: According to energy formula E= h c/ λ Energy has inverse relation with wavelength Longer the…

Q: 11. Caffeine is differentiated from theobromine: A. Easily soluble in hot water B. Soluble in acids…

A: The answer is given below

Q: treat epilepsy. What would happen to the equilibrium of oxacarbazepine in water when more…

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Q: Draw the product that would form when 2-methylpropene reacts with chlorine. • You do not have to…

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Q: A Moving to another question will save this response. Question 8 For the reaction below, the rate…

A: Activation energy is calculated by using the Arrhenius equation.

Q: mass of the substance

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Q: Question 9 Consider the following reaction that follows a second order rate law. 2 NO2 (9) →2 NO (g)…

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Q: Which of the following compounds could be separated from the others using an extraction procedure?…

A: Ans: acetic acid. Note : Diethyl ether, acetic acid, toluene used as organic solvents. Acetic acid…

Q: Consider an element that reaches its first excited state by absorption of 480.4 nm light. Determine…

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Q: (b) An orbital in the 7d subshell On = 7,1 = 3, m = +4 On = 7,1 = 3, m, = 0 n = 7,1 = 2, m = -1 n =…

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Q: 32. Which of the following statements about tetramethylsilane is incorrect? A. it produces a single…

A: The incorrect statement about Trimethylsilane (TMS) is given below

Q: the reaction Fe2O3(s) + 2Al(s) ----> Al2O3(s) + 2Fe(s) H° = -851.5 kJ and S° = -37.0 J/K The…

A: Given- H°=-851.5kJ  S°=-37.0J/K  Moles of Fe2O3=2.15mol Temperature=293K

Q: CH;OH Br (solvolysis) Sn1 Sn2 E1 E2 Sn1 & E1 Sn2 & E2

A: The correct answer about above reaction mechanism is given below

Q: Greetings Why and how do the thermodynamics quantities differ for a sparingly soluble substance

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Q: Write true if the statement is true. If false, replace the wrong answer with the correct word/phrase…

A: Electron affinity of an element can be positive or negative on basis of energy released or added…

Q: Part A. Heat Capacity of Calorimeter Your Data Partner's Data Volume (mL) of cold water 50 Volume…

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Q: 111 Problem 5 IR Spectrum everone Squd f 4000 3000 2000 1600 1200 800 V (cm') 100 Mass Spectrum…

A: DBE ( C2H4Br2 = 2- (4+2/2)+1 = 3-3 = 0.)

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.